Frontend Engineer – React Native, Expo, JSI
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Job Description
Frontend Engineer building features for React Native app at Ando, enhancing workforce infrastructure through AI technology. Collaborate with teams ensuring smooth native bridging and performance optimization.
Responsibilities:
- Build and maintain features in our Expo/React Native app (ando-employee-mobile), from UI down to native module integration.
- Write and debug JSI/TurboModule and native module code (iOS/Android) where Expo's managed APIs aren't enough.
- AI-assisted engineering: You use AI agents (Claude, MCP-based tooling) as a core part of your daily workflow for writing, debugging and testing code.
- Own performance-sensitive flows — list rendering, animations, cold-start time — and profile/fix issues at the native bridge layer.
- Implement and harden push notifications (expo-notifications), deep linking, and background/foreground behavior, including cold-start deep links into chat.
- Manage Expo SDK upgrades and native dependency compatibility.
- Maintain EAS build and CI/CD workflows, including automated test pipelines in EAS Workflows.
- Write Jest/React Native Testing Library coverage for hooks, screens, and native module wrappers.
- Triage and resolve crash and stability issues surfaced through Sentry.
- Collaborate with backend engineers on the mobile-facing REST/OpenAPI contract and with design on native-feeling UI patterns.
Requirements:
- 4+ years of professional React Native experience, including apps built or ejected from Expo (bare workflow, config plugins, or EAS Build).
- Hands-on experience with JSI, TurboModules, or writing native modules in Swift/Objective-C and Kotlin/Java.
- Strong TypeScript and React fundamentals; comfort debugging across the JS/native boundary (Xcode, Android Studio, Flipper/React Native DevTools).
- Experience with push notification systems, deep linking, and background task handling on iOS and Android.
- Familiarity with mobile CI/CD (EAS Workflows, Fastlane, or similar) and app store release processes.
- Startup mindset: A self-starter who works well independently and is genuinely comfortable with ambiguity.
- Practical testing instincts — Jest, React Native Testing Library, and a bias toward catching regressions before they ship.
- Comfortable working from a REST/OpenAPI contract shared with a Python/FastAPI backend and a Next.js web app.
Benefits:
- Professional development opportunities
- Flexible work arrangements
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